ABAP Select data from SAP table LVC_S_PRNT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP LVC_S_PRNT table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to LVC_S_PRNT. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the LVC_S_PRNT table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_LVC_S_PRNT TYPE STANDARD TABLE OF LVC_S_PRNT,
      WA_LVC_S_PRNT TYPE LVC_S_PRNT,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <LVC_S_PRNT> TYPE LVC_S_PRNT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_LVC_S_PRNT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM LVC_S_PRNT
  INTO TABLE IT_LVC_S_PRNT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LVC_S_PRNT
*  INTO TABLE @DATA(IT_LVC_S_PRNT2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_LVC_S_PRNT INDEX 1 INTO DATA(WA_LVC_S_PRNT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_LVC_S_PRNT ASSIGNING <LVC_S_PRNT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LVC_S_PRNT>-PRINT = 1.
<LVC_S_PRNT>-PRNT_TITLE = 1.
<LVC_S_PRNT>-FOOTLINE = 1.
<LVC_S_PRNT>-PRNT_INFO = 1.
<LVC_S_PRNT>-RESERVELNS = 1.

ENDLOOP.

LOOP AT IT_LVC_S_PRNT INTO WA_LVC_S_PRNT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LVC_S_PRNT-GRPCHGEDIT, sy-vline,
  WA_LVC_S_PRNT-PRNTLSTINF, sy-vline,
  WA_LVC_S_PRNT-PRNTSELINF, sy-vline,
  WA_LVC_S_PRNT-NO_COLWOPT, sy-vline,
  WA_LVC_S_PRNT-PRINT_CTRL, sy-vline,
  WA_LVC_S_PRNT-PRI_PARAMS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LVC_S_PRNT you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_LVC_S_PRNT TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_LVC_S_PRNT INTO WA_LVC_S_PRNT.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit SPDEV, internal->external for field PDEST
CALL FUNCTION 'CONVERSION_EXIT_SPDEV_OUTPUT'
  EXPORTING
    input =                      WA_LVC_S_PRNT-PDEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LVC_S_PRNT-PDEST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SPDEV, internal->external for field PRINTER
CALL FUNCTION 'CONVERSION_EXIT_SPDEV_OUTPUT'
  EXPORTING
    input =                      WA_LVC_S_PRNT-PRINTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LVC_S_PRNT-PRINTER.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_LVC_S_PRNT_STR, 
PRINT TYPE STRING,
PRNT_TITLE TYPE STRING,
FOOTLINE TYPE STRING,
PRNT_INFO TYPE STRING,
RESERVELNS TYPE STRING,
GRPCHGEDIT TYPE STRING,
PRNTLSTINF TYPE STRING,
PRNTSELINF TYPE STRING,
NO_COLWOPT TYPE STRING,
PRINT_CTRL TYPE STRING,
PRI_PARAMS TYPE STRING,
PDEST TYPE STRING,
PRCOP TYPE STRING,
PLIST TYPE STRING,
PRTXT TYPE STRING,
PRIMM TYPE STRING,
PRREL TYPE STRING,
PRNEW TYPE STRING,
PEXPI TYPE STRING,
LINCT TYPE STRING,
LINSZ TYPE STRING,
PAART TYPE STRING,
PRBIG TYPE STRING,
PRSAP TYPE STRING,
PRREC TYPE STRING,
PRABT TYPE STRING,
PRBER TYPE STRING,
PRDSN TYPE STRING,
PTYPE TYPE STRING,
ARMOD TYPE STRING,
FOOTL TYPE STRING,
PRIOT TYPE STRING,
PRUNX TYPE STRING,
PRKEYEXT TYPE STRING,
PRCHK TYPE STRING,
ARC_PARAMS TYPE STRING,
SAP_OBJECT TYPE STRING,
AR_OBJECT TYPE STRING,
ARCHIV_ID TYPE STRING,
DOC_TYPE TYPE STRING,
RPC_HOST TYPE STRING,
RPC_SERVIC TYPE STRING,
INTERFACE TYPE STRING,
MANDANT TYPE STRING,
REPORT TYPE STRING,
INFO TYPE STRING,
ARCTEXT TYPE STRING,
DATUM TYPE STRING,
ARCUSER TYPE STRING,
PRINTER TYPE STRING,
FORMULAR TYPE STRING,
ARCHIVPATH TYPE STRING,
PROTOKOLL TYPE STRING,
VERSION TYPE STRING,
ACHECK TYPE STRING,
NO_CHANGE_PRINT_PARAMS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LVC_S_PRNT_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_LVC_S_PRNT_STR-PRINT sy-vline 
WA_LVC_S_PRNT_STR-PRNT_TITLE sy-vline 
WA_LVC_S_PRNT_STR-FOOTLINE sy-vline 
WA_LVC_S_PRNT_STR-PRNT_INFO sy-vline 
WA_LVC_S_PRNT_STR-RESERVELNS sy-vline 
WA_LVC_S_PRNT_STR-GRPCHGEDIT sy-vline 
WA_LVC_S_PRNT_STR-PRNTLSTINF sy-vline 
WA_LVC_S_PRNT_STR-PRNTSELINF sy-vline 
WA_LVC_S_PRNT_STR-NO_COLWOPT sy-vline 
WA_LVC_S_PRNT_STR-PRINT_CTRL sy-vline 
WA_LVC_S_PRNT_STR-PRI_PARAMS sy-vline 
WA_LVC_S_PRNT_STR-PDEST sy-vline 
WA_LVC_S_PRNT_STR-PRCOP sy-vline 
WA_LVC_S_PRNT_STR-PLIST sy-vline 
WA_LVC_S_PRNT_STR-PRTXT sy-vline 
WA_LVC_S_PRNT_STR-PRIMM sy-vline 
WA_LVC_S_PRNT_STR-PRREL sy-vline 
WA_LVC_S_PRNT_STR-PRNEW sy-vline 
WA_LVC_S_PRNT_STR-PEXPI sy-vline 
WA_LVC_S_PRNT_STR-LINCT sy-vline 
WA_LVC_S_PRNT_STR-LINSZ sy-vline 
WA_LVC_S_PRNT_STR-PAART sy-vline 
WA_LVC_S_PRNT_STR-PRBIG sy-vline 
WA_LVC_S_PRNT_STR-PRSAP sy-vline 
WA_LVC_S_PRNT_STR-PRREC sy-vline 
WA_LVC_S_PRNT_STR-PRABT sy-vline 
WA_LVC_S_PRNT_STR-PRBER sy-vline 
WA_LVC_S_PRNT_STR-PRDSN sy-vline 
WA_LVC_S_PRNT_STR-PTYPE sy-vline 
WA_LVC_S_PRNT_STR-ARMOD sy-vline 
WA_LVC_S_PRNT_STR-FOOTL sy-vline 
WA_LVC_S_PRNT_STR-PRIOT sy-vline 
WA_LVC_S_PRNT_STR-PRUNX sy-vline 
WA_LVC_S_PRNT_STR-PRKEYEXT sy-vline 
WA_LVC_S_PRNT_STR-PRCHK sy-vline 
WA_LVC_S_PRNT_STR-ARC_PARAMS sy-vline 
WA_LVC_S_PRNT_STR-SAP_OBJECT sy-vline 
WA_LVC_S_PRNT_STR-AR_OBJECT sy-vline 
WA_LVC_S_PRNT_STR-ARCHIV_ID sy-vline 
WA_LVC_S_PRNT_STR-DOC_TYPE sy-vline 
WA_LVC_S_PRNT_STR-RPC_HOST sy-vline 
WA_LVC_S_PRNT_STR-RPC_SERVIC sy-vline 
WA_LVC_S_PRNT_STR-INTERFACE sy-vline 
WA_LVC_S_PRNT_STR-MANDANT sy-vline 
WA_LVC_S_PRNT_STR-REPORT sy-vline 
WA_LVC_S_PRNT_STR-INFO sy-vline 
WA_LVC_S_PRNT_STR-ARCTEXT sy-vline 
WA_LVC_S_PRNT_STR-DATUM sy-vline 
WA_LVC_S_PRNT_STR-ARCUSER sy-vline 
WA_LVC_S_PRNT_STR-PRINTER sy-vline 
WA_LVC_S_PRNT_STR-FORMULAR sy-vline 
WA_LVC_S_PRNT_STR-ARCHIVPATH sy-vline 
WA_LVC_S_PRNT_STR-PROTOKOLL sy-vline 
WA_LVC_S_PRNT_STR-VERSION sy-vline 
WA_LVC_S_PRNT_STR-ACHECK sy-vline 
WA_LVC_S_PRNT_STR-NO_CHANGE_PRINT_PARAMS sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.